- I have some WSRT data that has a single source in each multi source data base . These are eg 3C273 HI zero km/s , the in the next multi is 3C273 HI high freq shifted and then in the following 3C273 low freq shifted etc. I need to change the names to eg 3C273_on , 3C273_hi , etc. Do I use TABED for this ? thanks miller